JSFiddle - React, Tailwind, and code Playground

HTML

<img src="http://www.blabla.org/image.png" onerror="onImageError(this)" />
<img src="https://www.google.ch/images/srpr/logo11w.png" onerror="onImageError(this)" />

JavaScript

function onImageError(image){
    alert(image.src);
}